US Bridges

County Road H over Mancos River

PoorPosted for load

Montezuma County, Colorado · 2.5 MI SW of Mancos · Structure no. 083000H01.00004

Built
1965
60 years old
Condition
Poor
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
1 main span
Daily traffic
188
2022 count
Owner
County
County Highway Agency

About this bridge

County Road H over Mancos River is a steel stringer/multi-beam or girder carrying County Road H over Mancos River in Montezuma County, Colorado. It was built in 1965, so it is 60 years old, older than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 188 vehicles a day, roughly 2% of them trucks, projected to reach 209 by 2042. The structure is 51 ft (15.4 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCounty Road H
CrossesMancos River
Location2.5 MI SW of Mancos
RouteCounty Highway 0
Coordinates37.3269, -108.32978
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating14.9 US tons
Inventory rating8.9 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length51 ft (15.4 m)
Longest span48 ft (14.6 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic188 (2022)
Projected traffic209 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$819,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road H over Mancos River built?

It was built in 1965, making it 60 years old in 2025.

What condition is County Road H over Mancos River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does County Road H over Mancos River carry?

About 188 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road H over Mancos River?

The structure is 51 ft (15.4 m) long with a longest span of 48 ft (14.6 m) and a deck 24 ft wide.

Who owns County Road H over Mancos River?

It is owned by the County Highway Agency.